Improvement in bench-planes



UNITED STATES PATENT OEEICE.

GEORGE MLLEAR, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT lN BENCH-PLANES.

Specification forming part of Letters Patent N0. 50,37S, dated October 10, 1865.

To alt whom fit may concern: t

Be it known that I, GEORGE MLLEAE, of the city and county of San Francisco, and State of California, have invented certain new and useful Improvements in Carpenters Planes; and I do hereby declare that the following description and accompanying drawings are sut'- cient to enable any person skilled in the art or science to which it most nearly appertains to make and use my said invention or improvements without further invention or experiment.

The nature of my invention and improvement in planes consists in clamping the cutting-bit and turning the shaving cut by means of a metal cap drawn against the bit by a screw in the rear ot' the plane-stock, and in making' the clamping-cap adjustable horizontally by means ot' brackets, grooves, and adjustingscrews.

In the accompanying drawings, Figure l is an elevation ot'a plane with my improvements. Fig. 2 is a plan or top view. Fig. 3 is asection of the plane cut perpendicularly lengthwise. Fig. et shows some ot'ihe parts enlarged and separate from the stock.

In these drawings, A is the plane-stock, B the handle, and C the cutting-bit, all of which are made in the form in common use by mechanics.

Amortse is made entirely through thestock horizontally for the traversing block IWI, which is litted to traverse in it and moved by the screw I, which extends back through the rear of the stock and is provided with a collar, K, and there isa pin, L, through the stock behind the collar to prevent the screw from coming out when it is turned to traverse the blocl:` M. This block M is provided with two arms, R, which extend forward each side of the bit C and are perforated for screws which screw through the arms into the block N, which is properly the front part of the block M, as they are both traversed together by the screw I. The block N has two perpendicular grooves,

P, for the flanges S ot' the brackets O on the cap H to traverse in when the cap His raised by the screw F or drawn down by the screws G G, which pass through the cap and screw into the block N, the screw F screwing through the cap onto the block N, and the screws G G passing through the cap and screwing into the block N, so that by turning the screws the cap may be adjusted higher or lower on the bit. The cap H is made in the form shown in Figs. 8 and 4, and bent so that both ends bear or press upon the bit C to clamp it in the stock and hold itin its place while the plane is used.

The head E ot' the screw I ts against the end ofthe stock A, so that by turning the screw I the blocks M and N, with the cap H, are drawn back toward the rea-r otl thc plane and the cap H presses upon the bit C and clamps it fast and holds it in position upon its bed in the stock while the plane is used; and the loweretlge ot'the cap H may be adjusted higher or lower on the bit by turning the screws F and G so as to turn the shavings cut by the bit more or less short as they are cut. There is a brass plate, D, iitted into each side ofthe plane and fastened by screws to cover the mortise occupied by the block M in the stock.

I contemplate that the traversing blocks M and N may both be made in one piece ot' malleable iron, it' preferred that way.

Having described my improvements, I claiml. The screw I, traversing blocks M and N, and cap H, for clamping and holding the bit and turning the shaving cut, substantially as described, whether the cap is made adjustable horizontally or otherwise.

2. Making the cap H adjustable higher or lower on the cutting-bit by means of the brackets O, grooves I?, and screws F and G G.

GEORGE MLLEAR.

'Vitnesses:

O. W. M. SMITH, H. SAKEMAN. 

